The publishing and editorial teams would like to thank the following, for their invaluable service as 2021 reviewers for this journal. We are very grateful for the contributions made. With their help, the journal has been able to publish such high-quality articles:

• Abd Ul Aziz, Hamed
• Abdelmegid, Mohammed Adel
• Abdulkareem, Sulaiman
• Abdullah, Syed
• Abdullateef, Olanrewaju
• Abdussami, Aftab Alam
• Abediniangerabi, Bahram
• Abeysekara, Baudhi
• Abhilash, C. R.
• Abrishami, Sepehr
• Abruzzini, Aurora
• Abu-Khader, Waleed
• Abubakar, Mu'awiya
• Acheamfour, Victor
• Adaku, Ebenezer
• Adamtey, Simon
• Addy, Michael
• Adebowale, Oluseyi
• Adekunle, Samuel
• Adelaja, Adekunle
• Adeniyi, Onaopepo
• Adesi, Michael
• Adeyemi, Nabeel
• Adindu, Chinedu
• Adinyira, Emmanuel
• Adjei-Kumi, Theophilus
• Afum, Ebenezer
• Agbenohevi, Collins
• Aghimien, Douglas
• Aghimien, Douglas
• Agumba, Justus
• Agyekum, Kofi
• Ahadzie, Divine
• Ahmad Zakwan, Fariz Aswan
• Aiyetan, Ayodeji Olatunji
• Ajayi, Saheed
• Ajiboye, Tajudeen
• Aka, Adefemi
• Akbar, Muhammad Ayaz
• Akindele, Samson
• Akiner, Ilknur
• Akinlolu, Mariam
• Akinradewo, Opeoluwa
• Al Nasseri, Hammad
• Al-Zwainy, Faiq M.
• Alade, Kehinde
• Alao, Oluwaseyi
• Albtoush, Faten
• Aldabbas, Mohd
• Aldaghi, Tahmineh
• Alhusban, Mohammad
• Aliakbarlou, Sadegh
• Alidadi Shamsabadi, Akbar
• Aliu, John
• Allen, Chris
• Aloko, Mohammad Numan
• Altan, Haşim
• Aluko, Olusola
• Amoah, Christopher
• Ampavathi, Anusha
• Ampratwum, Godslove
• Anand, N.
• Ankomah, Emmanuel
• Ansari, Ramin
• Antwi-Afari, Maxwell
• Antwi-Afari, Prince
• Aopy, Mehrab
• Arunachalam, M.
• Asad, Muhammad Mujtaba
• Awuzie, Bankole
• Ayarkwa, Joshua
• Ayegba, Calistus
• Ayodele, Timothy
• Azam, Muhammad
• Aziz, Hussein
• Baah, Charles
• Babaeian Jelodar, Mostafa
• Babalola, Ayotunde
• Badawy, Mohamed
• Bahubalendruni, M. V. A. Raju
• Baiz, Wezha
• Bajjou, Mohamed Saad
• Balakrishna, K. R.
• Balogun, Teslim Bamidele
• Bamfo-Agyei, Emmanuel
• Baryshnikova, Nadezhda
• Belay, Solomon
• Belayutham, Sheila
• Bello, Wasiu
• Bensalah, Mounir
• Bernhardt, Herbert
• Bielecki, Sławomir
• Bilgundi, Srishail
• Blay, Andrew
• Boamah, Fredrick Ahenkora
• Boppana, V. Chowdary
• Bouazza, Mokhtar
• Boujaoudeh, Karen
• Boukadoum, Aziz
• Bustamante, Rosa
• Cao, Yongchao
• Chai, Changsaar
• Chan, Albert
• Chan, Joseph
• Chanda, Emmanuel
• Chaudhari, D. A.
• Che Ibrahim, Che Khairil Izam
• Cheng, Jianwei
• Cherukupalli, Kumar
• Chigara, Benviolent
• Chileshe, Nicholas
• Chinnusamy, Velmurugan
• Chinyio, Ezekiel
• Chow, Vivien
• Chowdhury, Showaib
• Coelho, Leandro
• Cooper, Luke
• Cruywagen, Hoffie
• D'apolito, Luigi
• Dacosta, Essel
• Dadzie, John
• Danaish, Mr
• Daniel, Emmanuel
• Danku, James
• Das, Dillip
• Davim, J. Paul
• De Silva, Harsha
• De Souza-Daw, Tony
• Deacon, Claire
• Debrah, Caleb
• Deorukhkar, Kalpana Prasanna
• Ding, Zhikun
• Doh, Shu Ing
• Dorador, Jesus Manuel
• Duah, Daniel
• Dube, Prinsloo
• Durdyev, Serdar
• Ebekozien, Andrew
• Edwards, David
• Ejohwomu, Obuks
• Ekanayake, Biyanka
• Eken, Taha Yasin
• Ekung, Samuel
• El Barkany, Abdellah
• El-Khalil, Raed
• Elhegazy, Hosam
• Emuze, Fidelis
• Emuze, Fidelis
• English, Jane
• Evans, Martin
• Eze, Emmanuel Chidiebere
• Eziefula, Uchechi
• Faheem, Muhammad
• Farnes, Ken
• Fauzi, Mohd Azrizal
• Fauzi, Muhammad Ashraf
• Feng, Guan-Hua
• Feng, Zhenan
• Fiorineschi, Lorenzo
• Fore, Stanley
• Fortune, Joyce
• Gadagi, Amith
• Ganah, Abdul A.
• Gavade, Priyanka A
• Ghansah, Frank Ato
• Gharehbaghi, Koorosh
• Gharouni Jafari, Kobra
• Ghazvinloo, Hamid Reza
• Ghosh, Pritha
• Glatte, Thomas
• Gonal, Veeresh Shashidhar
• Goudarzi, Hossein
• Goyal, Khushdeep
• Griva, Giovanni
• Guan, Yabo
• Gupta, Nitin Kumar
• Gupta, Professor Ashok Kumar
• Guribie, Francis
• Gyoh, Louis
• Haghani, Ahmad
• Hapiz, Hana
• Harinarain, Nishani
• Hasnida, Ab-Samat
• Hassanain, Mohammad
• Haupt, Theodore
• He, Bang
• He, Zhi-Ying
• Hedayati Marzbali, Massoomeh
• Hosseini, M. Reza
• Huang, Jieling
• Huang, Wei
• Kalaiyarasan, A.
• Ibn Majdoub Hassani, Zineb
• Ibrahim, Aliyu
• Ibrahim, Kabir
• Ibrahim, Yahaya
• Ikuabe, Matthew
• Inan Gunaydin, Tugba
• Ingle, Prachi
• Ismail, Radzi
• Ismail, Ruqayyah
• Ismail, Zul-Atfi
• Ismaila, Olasunkanmi
• Jaafar, Mastura
• Jadhav, Ambaji S.
• Jahami, Ali
• Jahangiri, Mehdi
• Jahangiri, Mehdi
• James, Ajith
• James, Paul
• Javidinejad, Amir
• Jayakrishna, K.
• Jayasinghe, Ruchini
• Jia, Andrea
• Jimoh, Richard
• Kabwe, Eugie
• Kadirgama, Kumaran
• Kahangamage, Udaya
• Kalatehjari, Roohollah
• Kandeke, Charles
• Kaushik, Amit
• Kaushik, Brajesh Kumar
• Kavishe, Neema
• Khatib, Jamal
• Khatleli, Nthatsi
• Khiani, Ravindar
• Khozaei Ravari, Fatemeh
• Khuzwayo, Bonga
• Kikwasi, Geraldine
• Kineber, Ahmed
• Kirytopolous, Konstantinos
• Kissi, Ernest
• Kommula, Bapayya Naidu
• Koranteng, Christian
• Kota, Srinivas
• Kpamma, Zoya
• Kukah, Augustine
• Kukoyi, Patricia
• Kulkarni, Siddharth
• Kumar, Sunil
• Kwofie, Titus Ebenezer
• Lai, Joseph
• Lakkanna, Muralidhar
• Lawani, Kenneth
• Le-Hoai, Long
• Lebelo, Ramoshweu
• Lee, Zheng Ping
• Liew, San
• Lin, Misheng
• Loganathan, M. K.
• Lopes Cabral, Sergio
• Love, Peter
• Maghsoodi Tilaki, Mohammad Javad
• Magoda, Cletus
• Maheswari, J. Uma
• Mahmood, Ahlam
• Malikan, Mohammad
• Mansuri, Lukman E.
• Manu, Patrick
• Mariani, Viviana Cocco
• Martins, Carlos
• Mashali, Ayman
• Matarneh, Sandra
• Mayouf, Mohammad
• Mbachu, Jasper
• Melkoumian, Noune
• Mengistu, Desalegn
• Mhundwa, Russel
• Micheal, Amany
• Miraj, Perdana
• Misnan, Mohd Saidin
• Misra, Anil Kumar
• Mlitwa, Nhlanhla
• Mohammadi, Mohammad
• Mohana Krishnudu, Doni
• Mohd Ishak, Salwa
• Mostafa, Sherif
• Mourad, Talbi
• Moyo, Tirivavi
• Mubarak, Ali
• Munir, Mustapha
• Mushan, Sagar
• Musonda, Innocent
• Mustapha, Khameel
• Narwane, Vaibhav
• Ndekugri, Issaka
• Nguyen, Tan Hai Dang
• Noorzai, Esmatullah
• Nouri, Hamou
• Nuramo, Denamo
• Nwulu, Nnamdi
• Ochoa, Jorge
• Odewole, Oluwagbenga
• Oguntona, Olusegun
• Okafor, Chigozie Collins
• Oke, Ayodeji
• Oke, Ayodeji
• Okoro, Chioma
• Oladinrin, Olugbenga Timo
• Olanipekun, Ayokunle
• Olanrewaju, Oludolapo
• Olatunde, Nathaniel
• Olawumi, Timothy
• Oloke, David
• Olukolajo, Michael
• Omotayo, Temitope
• Onitiri, Modupe
• Onubi, Hilary
• Opara, Hyginus
• Opawole, Akintayo
• Oriabure Treasure, Ijieh
• Othman, Ayman
• Othman, Nor Hazurina
• Oyegoke, Adekunle Sabitu
• Özyürek, İbrahim
• Paes, Daniel
• Palacio, Arturo
• Panuwatwanich, Kriengsak
• Patil, Rajeshwari S.
• Patil, Suhas
• Pawar, Vikul J.
• Pellegrino, Roberta
• Perera, B. A. K. S.
• Perez-Sanchez, Josue Francisco
• Phoya, Sarah
• Pinto, Manuel
• Pokharel, Shaligram
• Powell, Ronald
• Pramitha, Ambily P.
• Prasad, K. V.
• Prasanna, R.
• Prashar, Priyanka
• Praveen Kumar, K.
• Pretorius, Leon
• Pugi, Luca
• Purnomo, Muhammad Ridwan Andi
• Rahiminezhad Galankashi, Masoud
• Rahman, Rahimi A.
• Rana, Rishi
• Rasheed, Eziaku
• Reddy, P. Venkateshwar
• Renganaidu, Venkatesan
• Roberts, Chris
• Rokooei, Saeed
• Rotimi, James
• Rotini, Federico
• Routroy, Srikanta
• Sackey, David Mensah
• Saffiudeen, Mohamed Fayas
• Safi, Safia
• Saini, Jasbir
• Saju, N.
• Saka, Abdullahi
• Salami, Babatunde
• Salau, Ayodeji
• Salisu, Abubakar
• Sam, Shylu
• Samarasinghe, Don
• Samaraweera, Aparna
• Sekhar, Arun
• Senaratne, Sepani
• Senthil Kumar, M.
• Sepasgozar, Samad
• Shafabakhsh, Gholamali
• Shafiq, Muhammad Tariq
• Shahandashti, Mohsen
• Shahbaz, Muhammad
• Shahzad, Wajiha
• Shamsuzzoha, Ahm
• Sharifi Milani, Farnaz
• Sharma, Anil
• Shayan, Shadi
• Shenoy, Adithya
• Shibeika, Amna
• Shivarudraswamy, R.
• Shoar, Shahab
• Shokri-Ghasabeh, Morteza
• Shyn, C. S.
• Sibanda, Matthew
• Simpeh, Fredrick
• Sing, Michael
• Singh, Devendra
• Singh, Ekta
• Singh, Harshika
• Skoczkowski, Tadeusz
• Spiridonov, Pavel
• Srikanth, T.
• Srinivasan, Ashok Kumar
• Srivastava, Amit
• Statsenko, Larissa
• Suarez-Dominguez, Edgardo Jonathan
• Sukkari, Lilana
• Sultan, Hussein
• Sutrisna, Monty
• Taghizade, Katayoon
• Taha Hocine, Douara
• Tai, Shuangliang
• Taktak, Mohamed
• Talebi, Saeed
• Tang, Jiawei
• Tavoosi, Jafar
• Thwala, Wellington Didibhuku
• Tijani, Bashir
• Tramontin, Vittorio
• Tu, Jinsong
• Ukpata, Joseph
• Uma, S.
• Umar, Tariq
• Usman, Abdullahi Mohammed
• Vaggeeram, Hariharan
• Vahdatmanesh, Mohammad
• Valli Bhasha, A.
• Vasugi, V.
• Venugopal, Chitra
• Vinodh, Sekar
• Vishnu, Priya
• Volk, Rebekka
• Wang, Chen
• Wang, Dan
• Warrian, Peter
• Williams, Justice
• Windapo, Abimbola
• Wisdom, Justice
• Wium, Jan
• Wu, Hao
• Yadav, Ashish
• Yi, Wen
• Yunusa-Kaltungo, Akilu
• Yusof, Nor'aini
• Zainul Abideen, Ahmed
• Zavvari, Azam
• Zeghichi, Leila
• Zhang, Chao
• Zhao, Shi
• Zohrehvandi, Shakib
• Zorkany, M.
• Zulu, Sambo